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Planning & Zoning Commission -- February 7, 1996 Minutes 4. The grading plan shows Clearwater Creek widened south of Outlot D. A low flow channel should be maintained through this area. Goertz: This will be taken care of by Rice Creek and the Engineers before the permits are issued. 5. Slopes along the north property line of Outlot D are steeper than 4: 1. Goertz: The slopes are steep and will be seeded with wild grass seed. Intentionally made them that way. 6. A berm is shown between the residential development and Outlot D and the commercial lot north of Outlot D. However, no landscaping plan for this berm is shown. If the City will require landscaping, this should be shown on the plan. Goertz: The berm is not required but would be more attractive an alternative would be a redwood fence, which would look nice for the first two years. The berm is 8-10 feet. The upkeep is not the residents responsibility it would be the property owner of Outlot Donee they come before the city with a proposal. 7. The proposed pond on the northwest comer of Outlot D outlets to the east, into a ditch. However, the ditch appears to be very flat. The ditch slope at this location should be adequate to drain water from the pond to the 20th Avenue ditch and to Clearwater Creek. Goertz: Wrong. It flows west not east, and will talk with Dave Nyberg about it. 8. A drainage swale will carry stormwater through the back yards of Lots 24-27, Block 2. The slope through this area is approximately 0.3%. The slope should be increased to at least 1% to provide better drainage. Also, the swale should be movedfarther from the proposed houses. Goertz: Will deal with even if the houses have to be raised. 9. The proposed housedfor Lots 23 through 26 are shown with 5.0 feet of depth between the garage floor elevation and the walk-out elevation; however, for other houses, the difference is 3.5 feet. No explanation of this difference is shown. Goertz: Complying with the minimum basement floor. Difference is so that the driveways would not be flat. 10. Two sedimentation ponds are shown to provide stormwater treatment before discharging stormwater to Clearwater Creek. The ponds should be designed to provide for erosion control for both the design storm and the 100-year event. PZ2-6MM.WPS 2